Add endpoint for users' home feed

[silverAndroid]

This is different from /users/:username because that is just the posts that a specific user has made. This endpoint would be a combination of all your friends' posts ordered in some way (whether it be chronologically or by popularity).

[BrandonDanis]

Yeah, the /users/:username is used when visiting a profile. We need to make another endpoint such as /feed that would deliver the x most recent/popular posts from the users you follow.

That being said, we need to create another task that add the follow feature.
edit: added #5